1	Metope smooth. Forewings without coloured bands or spots (Gnezdilov et al. 2017a: fig. 23)	E. lenis
–	Metope with a row of distinct pustules along lateral margins. Forewings with coloured bands or spots (Figs 9, 11; Zhang et al. 2018: fig. 5; Gnezdilov et al. 2017a: figs 20, 33)	2
2	Metope without median carinae. Metopoclypeal suture incomplete medially. Hind wings rudimentary, shorter than half length of forewings (Zhang et al. 2018: fig. 5)	E. guangxiensis
–	Metope with weak median carinae running from upper margin to middle. Metopoclypeal suture complete, straightly, or weakly concave. Hind wings developed, longer than half length of forewings (Gnezdilov et al. 2017a: figs 20, 33)	3
3	Coryphe about 3 times as wide as long in the middle. Male anal tube enlarging from base to apical margin and deeply concave at posteromedial part in dorsal view (Gnezdilov et al. 2017a: fig. 6)	E. jehucal
–	Coryphe about 4 times as wide as long in middle. Male anal tube elongated in dorsal view, enlarging from base to apical fourth and narrowing at apical part, lateral margins with a triangular process in the upper half on each side (Figs 8, 13)	E. daweishanensis sp. nov.